Regulating device for air-compressors and the like.



'c. WAINWRIGHT & F. 1. CARNEY.

REGULATING DEVlCE FOR AIR COMPRESSORS AND THE LIKE.

' APPLICATION men OCT. 6. 19:1.

Patented Jan. 7,19191 a Q N WQM INVENTORS UNITED STATES PATENT omen: 1

CHARLES WAINWRIGHT AND FRED J. CARNEY, .01 PENNSYLVAIlQ'IA.

BEGULATING DEVICE FOR AIR-COMPRESSOR AND THE LIKE.

To all whom z'tmay concern:

Be it known that we, CHARLES Wamwnren'r and FRED J. Clumsy, citizens of the United States of America, residing at Erie, in the county of Erie and State of Pennsylvan-ia; have invented new and useful Improvements in Regulating Devices for Air- Compressors and the like, of which the following is a specification.

This invention relates to regulating devices adapted to be used in conjunction with the loading and unloading devices of air compressors and it consists in the novel features hereinafter described and claimed.

-In conjunction with the loading and unloading devices of air compressors it is desirable that the mechanism operate in a positive manner and. the object of the present invention is to provide a regulating device which may be used in combination'with any loading and unloading device or air compressdr and with any apparatus to-be controlled for the purpose of securing absolute and positive, and dependable regulation such as cannot be secured by using the loading and unloading device without such a regulating device.

In the accompanying drawing A The fi re is a vertical sectional view of theregu ating device.

The regulating device comprises a body 1 which is provided with cham ers 2, 3 and 4. A pipe 5 is adapted to be connected with the loading and unloadin device, (not shown) and the said pi e is a apted to transmit the pressure from t e said loading and unload- 111g device to the regulating device. One

end of the pipe 5 communicates with the chamber 2 and the said pipe is provided with anipple 6 which communicates with the chamber'4 through the head 7 which closes the said chamber 4. The head 7- is provided at its inner side with a sleeve 8. A port 9 establishes communication between the chambers 3 and 4. A spring pressed valve 10 is located in the chamber 2 and normally closes'the same. .A- pipe 11 connects with the chamber 2 and the valve 10 is located between the pipe 5 and the pipe 11. The said pipe 11 is adapted to be connected with the apparatus (not shown) that is to be controlled. A piston 12 is slidably mounted in the cham'ber2 and is provided at its side with a longitudinally disposed duct 13. The piston 12 is further provlded with a head 14 Specification b: Lcttersiatent. Application ma 0mm 6, 1917. semi no. 195,147.

"through the Patented Jan. 7, 1919.

which at times is adapted to close the endof the chamber 2. p

.A lever 15 is fulcrumed upon the body 1 and one end of the said lever engages the piston 12. 'A spring 16 is connected with the otherend of the lever 15 and is also connected wlth a hook 17 adjustably mounted upon the body 1. The spring 16 is undertension with a tendency to hold the lever 15 in the position as shown in thedrawing whereby the head 14 of the piston 12 is normally held awa from the end of the charm ber 2 and the uct Iii-establishes communi cation between the said chamber and the exterior of the body. A piston 18 is slidably, mounted in the chamber 3 and a pin 19" is.

interposed between the said piston 18 and the lever 15 at a point between the fulcrum of the said lever and the spring 16. The lever 15 normally holds the piston 18 in an elevated position in the chamber 3.

A cup shaped piston 20 is slidably mounted in the chamber 4 and is arranged to move along the sleeve 8 ofthe head 7. The piston 20 is provided at its sides with several ports 21. A bell crank lever 22 is fulcrumed uponthe body 1 and carries at one end a weight 23. A pin 24 is interposed between the other end of the bell crank. lever 22 and bears against the center portion of the cup shaped piston 20. A port 25 is located in the body 1 and communicates at one end with the interior of the chamber4 and at its other end communicates with the exterior of the body.

.The operation of the regulating device is as follows The air ,under pressure from v the compressor passes through the pipe 5, nipple 6 and sleeve 8 and when the pressure is adequate, it operates against the intermediate portion of the dpiston 20 whereby the said piston is move upon the sleeve 8 to close the vent 25 and open the ports 21. At the same time the pin 24 is moved longitudinally and the lever 22 is swung whereby the weight 23 is slightly elevated. The air then passes port 21 into the chamber 4 thence throug the port '9 into the chamber 3. This air under pressure operates against the piston 18 and moves the same in a downward direction. The said piston moves the pin 19 in a downward directionwhereby the lever 15 is swung against the tension of the spring 16 and-the piston 12 is elevated so that its head 14 is moved to a closed 'positionagainst the end of the chamber 2. The upper end of the piston 12 encounters the valve 10 and moves the same away from its seat whereby communication through the.

chamber 2 is established from the pipe5jto the pipe 11. Therefore the adequate pressure of air in the pipe 5 passes from the said pipe through the chamber 2 and out through piston is closed against the end of the sleeve 8, and any pressure .which is in the chamber may escape therefrom through the port that is opened-by said movement of piston 20. The air under pressure quickly exhausts from the chamber 4 .the spring 16 operates upon the lever 15 whereby the piston 18 is promptly elevated in the chamber 3 and the piston 12 is permitted to fall in the chamber 2 whereby the valve 10 assumes a closed position and the head 14 is moved away from the chamber 2 thus establishing communication between the pipe 11 and the atmosphere exterior from the chamber 2 through the duct 13 provided in the piston 12.

Thus the air under pressure is promptly exhausted from the apparatus to be controlled and vibration and hammering are averted.

From the foregoing description taken in conjunction with the accompanying drawing it will be seen that a controlling device of simple and durable structure is provided and that the same will operate in a prompt, positive and dependable manner to regulate the air pressure from a loading or unloadin device.

aving described the invention what is claimed is:- 4

1. A regulating device comprising 'a body having a chamber, a valve located in the chamber, a iston slidably mounted in said chamber an adapted'to encounter the valve and provided with a head adapted to close the chamber, a pipe connecting with the chamber at one side of the valve, an outlet port provided for the chamber at the opposite side of the pipe to the valve, the said body also having a second chamber, a piston slidably mounted in the said second chamber, means operativelv connecting the last mentioned piston with the first mentioned piston, the said body also having a third chamber, a port connecting the second mentioned and third mentioned chambers together, means for admitting pressure into the third mentioned chamber, a piston slidably mounted in the third mentioned chamher and normally closing the passageway 'mosphere and in another to seat toward the first named through the chamber, means for exhausting pressure from the third mentioned chamber, the piston inthe third mentioned chamber the pressure from the third mentioned cham er when the piston therein moves to an open position.

compressor regulator having a port for connection with means to be controlled and also having ports for connection with a compressor, a valve between one of the latter ports and the first named port and adapted to seat toward the first named port, movable means arranged in one position to connect the first named port with the atposition to close said connection and open the valve, pressure actuated means for moving said movable means, a chamber connected with said pressure actuated means, and adapted to re- ,ceive fluid under pressure from the other of the second named ports and having a vent, and a valve in-saidchamber, for establishing communication between said port and the pressure actuated means and closing the vent when subjected to adequate pressure and for closing said communication and opening the a vent when the pressure diminishes to a predetermined extent.

3. A compressor regulator having a ort for connection with means to be contro led and also having ports for connection with a compressor, a valve between one of latter ports and the first named port and adapted port, movable means arranged in one position to connect the first named port with the atmos phere and inanother position to close said connection and open the valve, pressure actuated means for moving said movable means, a chamber connected with said ressure actuated means and having a s eeve that communicates with the other of the second named ports and is open at its inner end; said chamber also having a vent in a wall opposed to the open end of the sleeve, a cup-shaped valve movable in the chamber and on said sleeve and having a port and also having means arranged in one position of the valve to close the chamber to the vent, and in another position of the valve to open the chamber to the vent, and yielding means tending to hold the valve in the last named position.

4. A compressor regulator having a chamber and also having in said chamber a sleeve open at its inner end and adapted at its outer end to be connected with a compressor, said chamber having a vent opposite the open end of the sleeve, a cup-shaped valve movable on the sleeve and having a ort and also having means for controlling t e vent, and yielding means tending to hold the valve in closed of the sleeve.

position against the open end.

adapted to closethe means for exhausting at 11W 5. A compressor regulator having a port for connection with means to be controlled and also having ports for connection with a compressor, pressure actuated means for controlling communication between the first named port and the. atmosphere. and for controlling communication between the first named port and one of the second named ports, a chamber connected with said pressure actuated means and communicating with the other of the second named ports and having a vent, and means in said chamber for establishing communication between said port and the pressure actuated means and closing the vent when adequate pressure is supplied through the ort and for closing said communication an opening the vent when the pressure diminishes to a predetermined extent.

In testimony whereof we afi'lx our signa- 20 tures.

CHARLES WAINWRIGHT. FRED J. CARNEY. 

